Daily revenue estimate: $53,265 Daily active users: NA | The first of several farm-themed apps on this list, FarmVille 2 features a range of fruits and vegetables, farm animals, and coastal escapes. The top in-app purchase is "Pile of Keys" for $1.99.

Daily revenue estimate: $56,165 Daily active users: 463,865 | Inspired by the recent Disney movie, Frozen Free Fall is a match-three game featuring characters Anna, Elsa, Olaf, and more. The top in-app purchases for this game are fairly low priced, ranging from 99 cents to $2.99. The top purchase is a "Large Pack of Snow" for $2.99.

Daily revenue estimate: $59,246 Daily active users: 577,265 | DoubleDown Casino promises to deliver the full casino experience for free. Games include blackjack, video poker, and slots. It makes money when users purchase chip packages, priced 99 cents to $99.99 for the "ALL-IN Pack." The top in-app purchase is the "Ante Up Pack" for $7.99.

Daily revenue estimate: $65,949 Daily active users: 266,502 | Bingo Blitz combines bingo with arcade-style gameplay to include power-ups, achievements, and collection items. The game also has Elvis bingo and slot rooms. The top in-app purchase is a "Power-Up 6-pack" for 99 cents.

Daily revenue estimate: $69,564 Daily active users: 712,418 | This is the top-grossing app solely focused on poker. Players can compete against friends or other online users in casual Texas Hold 'Em or tournament-style play. The most popular purchase is "Pack of 5 Golden Scratchers" for 99 cents.

Daily revenue estimate: $81,338 Daily active users: 317,820 | This role-playing game takes place in a world call "Grand Gaia," where players fight in an arena. Gamers can buy "gem packs" to become more powerful. The top in-app purchase is a "Gem Pack of 1" for 99 cents.

Daily revenue estimate: $98,193 Daily active users: NA | This adventure game from the writers of Family Guy includes a series of quests to save the city of Quahog. Top in-app purchases includes boxes, bins, and crates of clams and coins, ranging in price from $1.99 to $99.99.

Daily revenue estimate: $98,192 Daily active users: NA | As its name suggests, this game features lots of social video slots games. There are 55 games to choose from, with frequent social promotions. The most popular in-app purchase is "52,000 coins" for $19.99.

Daily revenue estimate: $129,568 Daily active users: 906,990 | Create your own version of Springfield, home of the Simpsons, in this city building game form the writers of The Simpsons. The top-in app purchase is a "Golden Scratch-R" for 99 cents.

Daily revenue estimate: $153,611 Daily active users: 1,323,434 | This block busting game challenges gamers to match two or more blocks of the same color to clear a level and rescue animals, such as puppies, piglets, birds, and bunnies. There's a range of in-app purchases that help blast blocks and extend play. The top purchase is "Extra Moves" for 99 cents.

Daily revenue estimate: $183,224 Daily active users: NA | This combat strategy game takes place on paradise islands invaded by the enemy. Before exploring the island, gamers must defeat "beachheads." In-app purchases include piles, pouches, bags, and boxes of "diamonds." The top seller is a "Pile of Diamonds" for $4.99.

Daily revenue estimate: $218,406 Daily active users: 1,543,518 | Hay Day is a farming game with crops to harvest, livestock to tend, and land to clear. In-app purchases involve "diamonds" and "coins" in various quantities. The top-seller is a "Pile of Diamonds" for $1.99.

Daily revenue estimate: $583.832 Daily active users: 1,959,371 | Destroy enemies while building an empire in Game of War - Fire Age. Players can make friends, join alliances, help, and trade with other online players. The top in-app purchase is "28000 Gold" for $99.99.